Highly Conjugated, Acetylenyl Bridged Porphyrins: New Models for Light-Harvesting Antenna Systems

• DOI: 10.1126/science.8178169
• Publication Date: 2006-10-06T00:01:25Z
• Authors: Victor S.-Y. Lin; Stephen G. DiMagno; Michael J. Therien
• Keywords: Chromophore; Synthon

A new class of porphyrin-based chromophore systems has been prepared from ethyne-elaborated porphyrin synthons through the use metal-mediated cross-coupling methodologies. These feature chromophores wired together single ethynyl linkages. This type topological connectivity affords exceptional electronic interactions between which are manifest in their room temperature photophysics, optical spectroscopy, and electrochemistry; these spectroscopic signatures indicate that species model many essential characteristics biological light-harvesting antenna systems.